/* * Copyright (C) 2003-2014 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef MPD_THREAD_ID_HXX #define MPD_THREAD_ID_HXX #include "Compiler.h" #ifdef WIN32 #include <windows.h> #else #include <pthread.h> #endif /** * A low-level identification for a thread. Designed to work with * existing threads, such as the main thread. Mostly useful for * debugging code. */ class ThreadId { #ifdef WIN32 DWORD id; #else pthread_t id; #endif public: /** * No initialisation. */ ThreadId() = default; #ifdef WIN32 constexpr ThreadId(DWORD _id):id(_id) {} #else constexpr ThreadId(pthread_t _id):id(_id) {} #endif gcc_const static ThreadId Null() { #ifdef WIN32 return 0; #else static ThreadId null; return null; #endif } gcc_pure bool IsNull() const { return *this == Null(); } /** * Return the current thread's id . */ gcc_pure static const ThreadId GetCurrent() { #ifdef WIN32 return ::GetCurrentThreadId(); #else return ::pthread_self(); #endif } gcc_pure bool operator==(const ThreadId &other) const { #ifdef WIN32 return id == other.id; #else return ::pthread_equal(id, other.id); #endif } /** * Check if this thread is the current thread. */ bool IsInside() const { return *this == GetCurrent(); } }; #endif